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Financial Plan ' corridor, including transit. The City of Livermore and the Alameda County CMA have adopted resolutions opposing a private toll road in the Route 84 corridor. A public toll road-has also been discussed, although no offidal positions have been taken. Because of the uncertain nature of the Mid-State Toll Road, either public or private, it is not included as a funding source for the Tri-Valley Transportation Plan. Nevertheless, it must be recognized that $137 million of the unfunded portion of the plan is attribut- able to Route 84. If the decision were made to adopt and build a toll road within the 2010 horizon of this plan, the proposed regional impact fee could be reduced, or the $137 million could be applied to one of the second priority regional projects discussed in the next section. This assumes that none of the $137 million would be needed to provide the required free roadway in the toll road corridor. Potential Future Transportation Projects The plan identifies three regional transportation projects that would be desirable for the area but are not required to meet transportation service objectives: high-occupancy vehicle lanes on 1-680 between Alcosta and Route 84, high-occupancy vehicle lanes on 1-580 between North Livermore Avenue and the San Joaquin County line, and the addition of a northbound to westbound flyover ramp at the 1-580/I-680 interchange. If more transportation funds become available than were assumed in this plan, the TVTC would like them to be allocated to these projects. Table 8-7 provides preliminary cost estimates for these projects. In current dollars the total cost would be $245 million. Table 8-7 Cost Estimates for Second Priority Regional Projects Cost (millions of Project current dollars) 1-580 HOV Lanes $85 (N. Livermore Avenue to San Joaquin Cc,jnty Line) 1-680 HOV Lanes 40 (AIcosta to Route 84) 1-580/I-680 Interchange-- 120 NB to WB Flyover Ramp Total $245 Barton-Aschman Associates, Inc. 159